A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5895-01-620-1548
NSN 5905-01-536-0007
NSN 6220-00-766-7580
NSN 6240-00-146-9322
NSN 6130-01-322-6772
NSN 6650-01-332-7634
NSN 6105-00-339-8366
NSN 6610-01-278-9387
NSN 6610-01-149-9749
NSN 5996-00-587-7311
NSN 6320-01-571-8974
NSN 5975-00-337-0448